From: Joel Pearson Date: 2012-12-08T05:07:19+09:00 Subject: Re: Need help to select some listbox item in different listbox together Ok I've had time to try running your code. The problem you seem to have is that if you have more than 1 item selected, you get the indices back as an array. When you try to pass that array on it'll give you an error. You either need to break down the indices in your code and loop through them, or make your listbox single-selection. -- Posted via http://www.ruby-forum.com/.